May 1994

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Features

Is Homosexuality Biologically Influenced?

Bohm's Alternative to Quantum Mechanics

This theory, ignored for most of the past four decades, challenges the probabilistic, subjectivist picture of reality implicit in the standard formulation of quantum mechanics

By David Z Albert

Directional Drilling

New techniques enable crews to drill around natural or man-made obstructions for oil and gas. These same methods are used to sample underground pollutants and bury service lines

By George A. Cooper

East Side Story: The Origin of Humankind

The Rift Valley in Africa holds the secret to the divergence of hominids from the great apes and to the emergence of human beings

By Yves Coppens

Departments

Evidence for a Biological Influence in Male Homosexuality

The Biological Evidence Challenged

How Interferons Fight Disease

Chesley Bonestell's Astronomical Visions

Aging Airways

Endangered Support of Basic Science

Letters

Letters to the Editors, May 1994

Recommended

Book Reviews--A Volcano is Born

50, 100 & 150 Years Ago

50 and 100 Years Ago: Train Telephone System and Science Behind Women's Suffrage

Profile

Fundamental Rights, Fundamental Physics

Mathematical Recreation

How Many Guards in the Gallery?

Science and the Citizen

When Treaties Fail

Neural Eavesdropping

The Lucky Ones

Take the Pain?

Unbearable Lightness

Family Matters

Vishnu Violated

Amazing Grace

Departments

How Green is my Label?

Technology and Business

What's Bred in the Bone

Devilish Details

Cold Calculation

Office Romance

As Advertised

Lollipop, Lollipop

The Price of Clean

Gray Matter

Purchase To Read More

Digital Issue ?Read or download this issue’s articles online. *A printed copy of this issue is not included. $7.99

Print + Digital All Access Subscription ?Read or download this issue’s articles online. Plus, subscribe to get Print, Online and Tablet access to the next 12 new issues to be released as well as Online access to archives back to 1845. $99.00

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